CVE-2017-7394 Denial of service in n/a
Unauthenticated attackers can crash the TigerVNC server by sending excessively long usernames, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7394?
CVE-2017-7394 is a high-severity denial of service vulnerability in n/a, published on 1 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In TigerVNC 1.7.1 (SSecurityPlain.cxx SSecurityPlain::processMsg), unauthenticated users can crash the server by sending long usernames.
Weakness: CWE-20
Which versions are affected by CVE-2017-7394?
It affects 1 product.
Products include Tigervnc Tigervnc.
How do I fix CVE-2017-7394?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-7394 being exploited?
There is no known exploitation of CVE-2017-7394 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-7394, GHSA-p2f4-v5gm-9wqj.